Backup Exec 2012 with Oracle agent

I have a Oracle 10g and 9i server in oracle 10G servers i dint configure RMAN and i need to take a backup from Backup Exec 2012. How can i take a backup? Should RMAN configure for taking backup with BAckup exec 2012?

Rman does not have ability to transfer backup across network that why it requires 3 rd party utility like Backup exec or Netbackup. Backup Exec ,beorasbt.dll communicates with rman and sends the command to take the backup rman receives that command and it starts initiating the backup and contacts backup exec media managment which in turn would be communicating with the remote agent and then transfer the backup either to disk or tape

Its mean without RMAN configuration we cannot take an Oracle backup? But I remember i took a backup of Oracle 6i or 8i DBs from OLD Backup Exec without RMAN configuration. Is there a way to take a DBs backup without RMAN configuration.